12210123123 has 12 divisors (see below), whose sum is σ = 19240194168. Its totient is φ = 7400074560.

The previous prime is 12210123119. The next prime is 12210123139. The reversal of 12210123123 is 32132101221.

It is not a de Polignac number, because 12210123123 - 2² = 12210123119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12210123096 and 12210123105.

It is not an unprimeable number, because it can be changed into a prime (12210123103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61667190 + ... + 61667387.

It is an arithmetic number, because the mean of its divisors is an integer number (1603349514).

Almost surely, 2^12210123123 is an apocalyptic number.

12210123123 is a deficient number, since it is larger than the sum of its proper divisors (7030071045).

12210123123 is a wasteful number, since it uses less digits than its factorization.

12210123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123334594 (or 123334591 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12210123123 its reverse (32132101221), we get a palindrome (44342224344).

The spelling of 12210123123 in words is "twelve billion, two hundred ten million, one hundred twenty-three thousand, one hundred twenty-three".